Hearth and Home Technologies Termination Cap ST375 User Manual
Installation instructions, Caution, Warning

Hearth & Home Technologies Inc. • ST375 Termination Cap • 33414 Rev G • 04/07
1
TM
TM
Models:
ST375
Termination Cap
Installation
Instructions
These chimney termination caps have been tested for use with specifi c Hearth & Home Technologies Inc. fi replaces and is 
a fi replace part. Refer to the fi replace installation isntructions for the correct accessories to be used. Check with your local 
building code agency before you begin installation to ensure compliance with local codes, including the need for permits 
and follow-up inspections. If you encounter any problems regarding code approvals, or if you need clarifi cation of any of the 
instructions contained here, contact your Hearth & Home Technologies Inc. dealer. For the dealer nearest you, please visit 
www.hearthnhome.com.
Note: An arrow (¨) found in the text signifi es change in 
content.
1a
3
2
1b
FEET
CHASE TOP
MAX. 4-3/4 in.
(121 mm)
Item
Description
Qty
1a
Termination Cap - Top
1
1b
Termination Cap - Base
1
2
Slip Section
1
3
Fastener Package
1
Note: The ST375 is designed for use 
with the SL300 Series pipe.
Sharp Edges
• Wear protective gloves and safety 
glasses during installation.
CAUTION
• Assemble the SL300 Series chimney sections to within
4-3/4 in. (121 mm) below the top of the chase.
• Remove the top.
• Center the partially disassembled base of the termination 
cap over the chimney (inside the chase), and drop the 
double walled slip section through the fl anged opening in 
the base of the termination cap so it telescopes both the 
inner and the outer chimney sections.
• Adjust the termination cap so the slip section does not bind
the chimney section. Rotate the cap so it is square with 
the chase and mark the position using the holes provided 
in the feet as a guide.
• Drill through the chase top using a 1/8 in. (3 mm) diameter
drill at the marked locations. Place a small amount of 
waterproof sealant under each fl ange of the termination 
cap. Attach the cap to the chase using the screws provided 
in the fastener package.
• Assemble the top of the termination cap using the four
black screws provided in the fastener pack.
• Place waterproof sealant on top of all screwheads (or
nailheads) on the chase top. Periodic resealing may be 
needed to prevent leaks from developing.
Fire Risk
You must use the slip section provided with 
this chimney top.
• Single wall or other variations from the 
slip section MUST NOT be used.
Substitute parts may increase temperatures 
to adjacent combustible materials.
WARNING
Fire Risk
• Intended for use with a metal chase 
top.
Use of combustible materials will cause a 
fi re hazard.
WARNING
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